Released on July 21, 2011. Core i5 or Core i7 Processor. Thunderbolt. This unit is also used to run the Mac Mini Server configuration.

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Poor performance, slow start, harddrive failure?

I've been experiencing bad performance on my Mac Mini Mid 2011. I can't seem to understand why, I've tried the following:

  • Mac OS X Reinstall
  • Memory change
  • Resetting NVRAM & PRAM
  • HDD Repair
  • HDD Permision Repair

The reinstall took about 1-1,5h which is a long time! And the problem is still there.

Is the drive about to die on me? I'm currently running the extended Apple Hardware Diagnostics. But no errors have yet to been prompted.

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Deck the Halls
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2 Answers

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Performance issues can be tricky to track down.

Clearly you've spent a lot of time reviewing the hardware size of things. Assuming your HD is OK.

In some cases it's the fragmentation of the files and/or lack of free space on your HD that is more likely the issue. There are free apps to clear out old cache files and unneeded files. You'll need to buy a defrag app to defrag your HD or using an external HD you could copy off your internal HD files completely, then deleting your files from the internal and copy back your external HD files (a poor mans defrag).

You could also have something running in background that is sapping your CPU which will also slow your HD responsiveness. One common thing I look for is P to P apps these sharing Apps tend to kill your systems performance as people are accessing your system concurrently. I would turn off and disable them.

Malware is also a big problem right now some echo your actions and files to there servers (stealing everything from your system and life!) Make sure you have run Apples' OS updates as they have fixes to stop these and an anti-malware tool to remove some if found. It's now time to be more pro-active using an anti-virus program (which can also clean these Malware and worm apps).

You may also need to also check your OS & web browser of extension apps or widgets that could be running using up your systems resources.

If you have set some apps to start when you boot up your system you may want to disable this feature.

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Thank you for your reply, I've ran the Apple Hardware Diagnostics during the night and it shows a large amount of errors during the HDD test stage.

I've since then tried to do as you suggested but the slowness or lack of performance is still there. I'm going to let an Apple Certified store take a look at it, I'm glad that I still have warranty :)

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Did you make a backup of your files? Your testing now implies the HD has problems. They will likely reformat the drive or replace it. Thank goodness you still had coverage!

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Yes, I'm continuously backing up my files with Time Machine :) And the reseller confirmed that the hard drive was to blame for the performance loss or lack of performance at all.

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I have the same problem, changed the HD and still very bad performance. Could it be the cpu?

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@Pajama Lama - How about creating your own question with your details of your system. I doubt your CPU is the problem. But without more details it would be difficult to answer.

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